Improvement in fan-blowers



B. F. STURTEVANT.

FAN-BLOWERSQ NW1-85,462. Y Patented De.19,1a7e.

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7g4' L@ f i a, @l J lll/L- TN: GRAPHIC CDJLV,

f-, BENJAMNsrpnTEvNfnfoE BOSTON;Ms'sAoUsETTs;

# MPROVEM'ENT IN1 EAN-BLQWR'S- 'spetvinantn forming part'of Lettgrgratljh is5,4 62, d9ted lDewael@ 19, 1876;,app1i'cafi'0n 'filed f Ifloetoiper,1t,1376, v, V

vToalluglw'mftmay concern: v Be' it known thatfIf, BENJ 'MIN Estuarin- VAN'l, of Boston, in' the'county of Suffolk and State of Massachusetts, yhave invented Improvements in Fan-Blowers, .of which the following is a specification:

This invention relates to improvements in rotary fan-blowers; andv consists in supporting the shaft of the fan i'n journal-boxes provided with knuckle-joints between the bearing portions of the journal-box and the supporting-stands, that are, when adjusted, bolted down upon the rests made to receive them, such construction of the journal-box providing means within the box itself whereby the bearing portion may be readily placed in perfect line with the shaft, and when in such position may be positively fixed or fastened with the stand, the bearing and stand so fastened together, after adjustment, thereafter acting as though the bearing and stand were castin one solid piece.

In ordinary boxes used to support short shafts, and wherein the portions to be bolted down are cast as part of the box, there is no provision whatever in the box itself to bring the bearing portion in line with the shaft to be held by it, and such journal-boxes have to be specially fitted and adjusted in proper line.

This knuckle-joint in the journal-box is of great advantage when setting up new blowers, and is specially advantageous when putting together blo'wers that have been repaired, or in which new boxes are added, or old boxes newly lined.

This invention also has reference to the formation with the casing, and as part of it,

-of bearing-abutments cast with and extending from the casing, affording strong, rigid supports for the stands of the journal-boxes to be attached to them, to sustain the shaft of the blast-wheel. The upper part of these abutments is made flat, and broad enough to j receive the stand of the box, and permit such stands to be adjusted both horizontally and laterally, to insure the proper placing of the blower-shaft in the casing. The stands are bolted down upon these abutments, and the bolt-receiving openings in the stands, being larger than the bolts, permit the stands to be moved for .purposes 'of adjustment p upon the abutments;

'Figure 1 represents., in front View, a 'blower embodying my improvements; Fig. 2, a section throughA the Yjournal box, and Fig.'3 a cross-:section through the knuckle joint. 'I 4 The casi'mgV a is made in halves vor i sections, andffrom the' lower sections project' laterally' bearingabutments o, l.provided with broad faces d. The bearing-abutments are cast as integral portions of the casing surrounding the blast-wheel, which may be of any usual construction. The driving pulleys b are secured upon the shaft r of the blast-wheel, the ends of the shaft extending outward beyond the pulleys, and being supported in the bearing portionsfof the journal-box, lined or not with any suitable lining metal. The ends of the shaft abut against end plugs g.

A portion, o, of the bearing portion extends contact with the shaft, and lits between upright portions of the stand e, composed, in this instance, of two separate pieces,-having flanges p to rest upon, and be bolted down to the abutment by bolts h.

The portion o of the bearing is held between the upright portions e of the stand, a bolt, t', extending through all, as shown in Fig. 3, making a knuckle-joint, which permits the bearing part f to be moved upon the bolt as a center, when the shaft is being properly localized, after which the bolt is tightened through its nut, which causes the bearin g portion to be held positively and fixedly with relation to the stand. The enlarged bolt-holes in the iianges p of the stands, adapted to be bolted down upon the abutments c d, permit all other necessary adjustments of the journal-box in lateral and horizontal directions.

The lubricating material is placed in the oil-cup k, a suitable wick or conductor leading it therefrom through the tubes to the shaft and bearing portion. The lubricating material applied to the shaft follows the shaft, and escapes therefrom into the chamber m, formed in the part o of the bearing portion f, and the oil or lubricating material may be drawn out of such chamber through a cock or closed outlet, n, to be reused.

below that portion of the bearing directly in spider-arms adapted to support.tublllfafzlfbeitx-v wherein each journal-bozeistsupported and; i

adjustable upon a single rigid abutment, leav ing the driving'pulley unobstructed fori'xhe` l boltsto.permitthehorizontal and lateral adbelt to run thereto. v

By connecting the bearing portions. and stands through a joint, as described, all fitting of the journal-boxes to the abutmeuts byMlf' ing or .cuttingl is obviated.,

The bearing is notv herein broadly claimed?,` as it, withv itsoil-chambers,A will be: made: the

Vsubject-matterl of another application.`

I claiml 1. The bloztfer-casingand., shaftr, incofmbif nationV with bear-'ing` sustaining abutmentscast on the casing, and adaptedato, support bearings for theend's of the shaft outside the pulleys, substantially asdescribed",

In a fagnfblgmer, the blower.:sh-still: n. in collabimttion withthe journelfboxes composed of bearing portions and stands provided with v jdqints, to permit the bearing portions to be placed in line with the shaft, and to be then i fixedpostiyely tothestaudsttheletter adapted to be adjusted upon and bolted to the abutments, substantially as described.

Thzalmbsmnits c d, cast with the blowercasing, in combination with the stands for the bearing portions of the journalboxes, and

j ustment'thereof, and bolts to secure or fix the stands and bearing. portions positively to- Lfgether, substantially as described.

In testimony whereoi I havel signed my name tot this; specification in the.i .presence 'of i two suhscni.bilig witnesses.,

BEM/E; smmnvanfr.

Witnesses.; v

G.. Wnden',

.3..J B., RIDDER., 

